Drill-chuck.



No. 844,631. PATENTED PEB-.19, 1907.

R. TEMPLE.

DRILL CHUCK.

APPLIOATION FILED M1124. 1906.

'bore lor receiving the tool.

UNTTED STATES PATENT FFTCE ROBERT TEMPLE, OF DENVER, CLORADO.

DRILL-CHUCK.

Specification of Letters Patent.

Patented Feb. 19, 190'?.

Aspiration sied April 24. ieee. sciiti No. 313.441.

city and county of Denver, State of Colo-.

rado, have invented certain new and useful Improvements in Drill-Chucks, of which the following is a specification. y invention relates to drill-chucks. and has for its object to provide a simple, economical, and etlicieiit drill-chuck.

To this end my invention consists in the combinations and details hereinafter dcscribed and claimed. 1

In the acconuianying drawings, .Figure l is a sectional elevation of a chuck constructed in accordance with in v invention, showing the tool in operative position. li"ig..2 is a transverse sectional View on theI line 2 of Fig. 1 looking in the direction of the ari'ow. Fig. 3 is a top plan view of the key. Fig. 4 is a side elevation of the key. F ig. 5 is a top plan view of the bushing. Fig. G is a top plan view et the socket member.

In the drawings, (L indicates a drill-piston or socket member having a central or axial A lateral opening c communicates with thisJ axial bore and extends out through the side wall of the socket member for receiving a,key ld. A bushing c may be interposed between the toolf and the walls of the axial opening or bore of the socket member, and this bushing,

is also provided with a longitudinal opening g, through which the inner edge ol' the key I extends.

A chuck-collar h is slidably mounted on the drill-piston or .socket member of the chuck, such collar being provided with an annular bore adapted to cireunifercntially engage the socket portion. The inner face ol` the collar is provided with a wedge-shaped longitudinal recessed portion, having an upper inclined wall i', which extends in the direction-.ot the length of the collar and parallel side walls le. The Wedge-sliaied key d is supported between the parallel side walls of the recessed portion of' the collar and has its upper inclined face engaging the inclined wall of the recessed por-tion, the inclined face ot the key being indicated at 7'.

A pin Z is mounted in suitable perforations in the collar and extends transversely thereof across the wedge-shaped recess thereof in position t0 engage the outer end of the key, and thereby limit the iiiovement of the collar iii a releasing direction, thus permitting the coll lar to be tightened upon the key and the key i pressed into engagement with the tool by the t' downward o r forward movement of the collar and preventing the accidental releasing ot' the parts. The key is provided with a concave inner edge portion ym, which is adapted t0 frictionally engage the adjacent'. side of' the tool and hold it securely in operative posimoved. that its outer end extends beyond the outer end ot the socket portion when the parts are in both operative or inoperative position, thus forming a protection for the end of the place. r

.ln order to conveniently force the chuckcollar into engaging position, l provide its the blows` of a hammer to force the parts into locking engagement. By this arrangement it will be seen that in order to mount the tool in the chuck it is only necessary to move direction away from `the open end ofthe socket. member, insert the key and tool, and `slip the collar forward or toward the open end of the socket member, then insert. and

ol" theouter end of the key,.as shown in Fig. 1. When the members are in thisposition, it will be seen that the use of the chuck in actual practice will cause the tapered portion the similar inclined or tapered portion of the wedge-shaped key, and thus more securely fasten the tool in position as the chuck is reciprocated.

1. A drill-chuck comprising a socket ineinber provided with a longitudinal bore for receiving the tool, a sliding collar mounted on the socket ineniber said collar being provided cuniferential flange, and means engaged by the collar and the tool to secure the tool'in tion when the key is pressed against. the tool o 5 rlhe chuck-collar is of such length socket portion and preventing injury thereto 8o by accidental blows when securing the tool in outer end with a flange i, adapte( to receive the chuck-collar rearward or in a releasing 9o secure the pin in position slightl y in advance 9 5 ot the collar to iinpinge more tightly against ioo at one end with an outwardly-extoiidiiig ciri io operative position, the flanged end of the eol- Y socket member having an inner surface portion in engagement with the key, and a pin `mounted in siieli eollai' movable into enon the socket member said collar having an outWa-rdlv-turned ilanged portion extending beyond the tool-receiving end of the socket member, and means engaged by the eollar l and the tool to lock the tool in place.

3. A drill-chuck comprising a socket inember provided With alongitudinal bore for receiving the tool, and with a lateral opening Communicating with the bore, the end walls of this opening being shouldered as described,

a sliding collar surrounding the socket ineinber said Collar having at one end an outwardly-extending flange bevond the end of l the socket member said eollar also provided with a longitudinally extending Wedgef shaped recess on its inner fac-e, and a shouldered key resting in the lateral opening oi the socket having one fece engaging the tool- Shank and the opposite face inclined to eoaot with the wedge-shaped portion ol" the collar,

substantiallv as described.

4. In e drill-ehuek, thecombination of a l Socket member provided with :in opening for receiving a tool and having a lateral opening communicating With such tool-receiving opening for receiving it securing-key, a key mounted in suoli lateral opening, :ind :i movl able collar member mounted upon such socket member having an inner surface portion in engagement with suoli key and provided with `eenring means movable into engagement with Such key l'or positivelyliniiting the movement oll the collar in it releasing direetion.

o. .ln a drill-eliuek, t-lil combination of a socket member provided r` th a central opening ior receiving a tool ai l having a lateral opening communicating with suoli central opziiiiig for reeeivii'ig a securing-key, a key mounted in suoli lateral opening and having an outer odge extending laterally and in the direction of the open end of the soc-liet portion at an incline, a col-lar slidably mounted upon suoli Socket member and having an in olined inner surfaoe portion iii engagement with the inclined surface portion of auch key, and a pin mounted in suoli Collar and movable into engagement with the outer end of the. key for limiting the movement of the .collar in a releasing direction.

l socket member and an inclined inner Wall gageinent with the key for positively limiting i the movement of the collar in a releasing direetion.

5. .in drill-ohneh, the eomliiiiation of a socket member provided with an opening ioi' receiving a. tool and having a lateral opening tool-receiving mounted in suoli lateral opening, and a movl ible Collar member mounted upon Snell portion in engagement with the. inclined suriaee portion oi" such key, and a pin mounted in suoli collar between the inner inclined wall portion and the annular inner wall portion thereof' and movable into engagement with the outer end ol' the keyloi limiting the movenient oli the collar in a releasing liieetion.

ROBERT TEMPLE.

\i\'itness'es z .Fmcniiio .loiixY PALMA, FRANK ALLEN linwis. 

